@ Sergio as I recall, we had a positive and negative ( cut out ) wood pattern; the neg was clamped to the drawer front and I used a plunge router to remove the layer ( 1/4 ” ? ) of ash. The pos was used to create the actual inlayout of sapele. I believe that involved a straight edge router bit around the perimeter. The resulting inlay was close to perfect…didn’t need any filler. Thanks for asking!

Very beautiful and majestic chest, Tools or Jewelry, this chest is worthy for only the best of contents, style and superb craftsmanship, with excellent choice and matching of wood, makes this a real Gem of a project, thanks for sharingps. If You could share the vendor for the hardware it would enhance my vendor list greatly, and be appreciated, thanks